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Small Signal with amplitudes less than thermal voltage
Small Signal with amplitudes less than thermal voltage
" i+ |' ]- X6 W# mIn AC mode SPICE computes the frequency response of linear circuits. Small input signals, with amplitudes less than the thermal voltage, Vth=KT/q, are assumed for nonlinear circuits that are linearized around the DC operating point., S% t% H( v* D4 ]8 F2 X
6 E9 q6 x- Y: gReference: "The SPICE BOOK" by Andrei Vladimirescu, pp141
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結論如下:& E4 i, z, W1 _7 d
大信號 非線性分析7 P8 O+ I; h6 w1 t
小信號 線性分析1 y3 E* k# n, k1 a7 y
小信號是大信號在某一個點的線性近似, p6 n5 n% V' j% {& q. r
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Please visit the following website for more detailed discussion' D# O, i1 P3 n! U1 f: E4 V
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http://www.eetop.cn/bbs/viewthre ... p;extra=&page=1 |
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